> For the complete documentation index, see [llms.txt](https://docs.getblock.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.getblock.io/api-reference/rootstock-rsk/rsk_eth_getfilterchanges.md).

# eth\_getFilterChanges - Rootstock

Example code for the eth\_getFilterChanges json-rpc method. Сomplete guide on how to use eth\_getFilterChanges json-rpc in GetBlock.io Web3 documentation.

#### Parameters

`QUANTITY` - string

The filter id.

#### Request

```java
wscat -c wss://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/
# wait for connection and send the request body 
{"jsonrpc": "2.0",
"method": "eth_getFilterChanges",
"params": ["0x16"],
"id": "getblock.io"}
```

#### Response

```java
{
    "id": "getblock.io",
    "jsonrpc": "2.0",
    "result": null
}
```